摘要
使用固定床管式反应器研究了3种生物质成型燃料棉杆、竹屑和砂光粉热解过程中无机组分Na、K、Ca、Mg、Cl、S的析出特性。研究发现,生物质成型燃料中的S主要以有机态存在,其分解析出发生在600℃以下;成型后S的析出量在350℃时约减少16%,但是温度升高以后,成型过程对S的析出量影响不大。Cl的析出集中发生在中低温度段,主要是水溶态Cl发生反应而析出;相比棉秆生物质原样,成型以后Cl的释放量有所减少。燃料本身特性的不同导致碱金属Na与K的析出特性显著不同,并且棉秆成型后Na与K的析出率增大,低温下（〈550℃）Ca和Mg的析出量变化不大,高温下（〈550℃）析出率增长大约10%。
In this paper, the releasing characteristics of the main inorganic elements Na, K, Ca, Mg, S and Cl, during the pyrolysis of cotton stalk, bamboo and wood pellets were studied, using a fixed bed reactor. It was found that the majority of S exists in organic state in the biomass pellets, and the decomposition mainly occurred below 600℃; compared with cotton stalk powder biomass, the releasing ratio of S from cotton stalk pellets reduces about 16% at 350℃, but with the rising of temperature, the difference of the two is small. The releasing of Cl, mainly happen at middle temperature; the releasing ratio of Cl in cotton stalk pellets is smaller than that of powder. In addition, fuel characteristics results in the significantly different of releasing characteristics of Na and K. Compared with cotton stalk powder biomass, the releasing ratios of Na and K are increased,while of Ca and Mg have a little change at low temperature（550℃）, and rise about 10% at high temperature（550℃）.
作者
桑会英
杨伟
朱有健
成伟
杨海平
邵敬爱
陈汉平
SANG Huiying;YANG Wei;ZHU Youjian;CHENG Wei;YANG Haiping;SHAO Jingai;CHEN Hanping(State Key Laboratory of Coal Combustion （Huazhong University of Science and Technology）, Wuhan 430074, Hubei Province, China;Zhengzhou University of Light Industry, Zhengzhou 450002, Henan province, China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2018年第9期2687-2692,共6页
Proceedings of the CSEE
基金
国家自然科学基金项目(51476067,51506071)
湖北省自然科学基金项目(2016CFB132)~~
关键词
生物质成型燃料
热解
无机元素
析出特性
biomass pellets
pyrolysis
inorganic elements
releasing characteristics
